Baker's Cyst Report

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BAKERS CYST

BAKERS CYSTPopliteal CystDiane D. Sosa1st year - College of MedicineNew Era University1

BAKERS CYSTPopliteal CystDiane D. Sosa1st year - College of MedicineNew Era University

Swelling at the back of the knee.During inspection, youll see a SWEELING AT THE BACK OF THE KNEE.It is also known as popliteal cyst which lies posterior to the medial femoral condyle.2

BAKERS CYST

Build-up of fluid inside the BURSA.Build up of fluid inside the bursa between the two head of the calf muscle (semimem and medial gastroc)The cyst is connected to the knee through a valvular opening.3ANATOMY POPLITEAL FOSSA

BORDERSMedialLateralSemimembranous m.Biceps FemorisMedial head Lateral headGastrocnemius mBordersSuperomedial: semimembranosusSuperolateral: biceps femorisInferomedial: medial gastroc headInferolateral: lateral gastroc headContentsPopliteal artery and veinTibal and common peroneal nerves5POPLITEAL FOSSA

CONTENTSMedialLateralPopliteal artery & veinTibial nerveCommon fibular nerveBordersSuperomedial: semimembranosusSuperolateral: biceps femorisInferomedial: medial gastroc headInferolateral: lateral gastroc headContentsPopliteal artery and veinTibal and common peroneal nerves6

KNEE JOINT

Femoral condyleTibial PlateauPatellofemoral jLIGAMENTSEXTRACAPSULARINTRACAPSULAR

Fibullar/ LateralCollateral LigamentTibial/MedialCollateral LigamentOblique Popliteal LigamentPatellar LigamentEXTRACAPSULAR LIGAMENT:LP-attached above and lower border of the patella and below the to the tuberosity of the tibia. -continuation of Quadriceps tendon-separated from the synovial membrane by the INFRAPATELLAR fat padsOPL-tendinous expandion from semimebranous tendon. -strengten the POSTERIOR of the capsule.MCL- broad, flat band attcahed ABOVE THE MEDIAL CONDYLE of the femur and BELOW HEAD OF THE TIBIA-firmly attached to the edge of the MEDIAL MENISCUSLCL- CORD LIKE. ATTACHED TO THE lateral condyle OF THE FEMUR and BELOW TO THE MEDIAL SURFACE OF THE SHAFT OF TIBIA. Firmly attached to the edge of the medial meniscus.8LIGAMENTSEXTRACAPSULARINTRACAPSULAR

LIGAMENTSINTRACAPSULARCRUCIATE LIGAMENT:-2 strong ligament foundwithin the capsule of knee joint but outside synovial cavity by a covering of synovial membrane.MAIN BOND BETWEEN FEMUR AND TIBIA throughout JOINTS RANGE OF MOVT.

ACL: attached to the ANTERIOR ASPECT OF INTERCODYLAR AREA of the Tibia.Pass upward, backward, and laterlaly to be attached to the posterior parrt of the medial surface of the lateral femoral condyleTAUT whenknee is FULLY EXTENDED, slack when flexed.PREVENTS POSTERIOR DISPLACEMENT of the femur from the tibia.(when flexed) PREVENTS THE TIBIA FROM BEING PULLED ANTERIORLY.

PCL: attached to the POSTERIOR ASPECT OF INTERCODYLAR AREA of the Tibia.Pass upward, FORWARD, MEDIALLY, to be attached to the ANTERIOR parrt of the LATERAL surface of the MEDIAL femoral condyleSLACK whenknee is FULLY EXTENDED, TAUT when flexed.PREVENTS ANTERIOIR DISPLACEMENT of the femur from the tibia.(when flexed) PREVENTS THE TIBIA FROM BEING PULLED POSTERIORLY

L.IJML.L10

SEMILUNAR CARTILAGE (Meniscus)Meniscus

Menisci- CUSHION BETWEEN TWO BONES.C shaped lamellae of fibrocartilage. TRIANGLUAR IN CROSS SECTION. PERIPHERAL Border-thick and convex- attached to the Capsule where the inner border is thin and concave and forms a free edge.Upper surface- concave/ Lower- flatdcavav11KNEE CAPSULE:-attached to the MARGINS OF THE ARTICULAR SURFACE and sorrounds THE SIDES AND POSTERIOR ASPECT of the JOINT.Front-absent-permitting synovial membrane to pouch ipward beneath the quadriceps tendon-> SUPRAPATELLAR BURSA.Side: strenthened by the expansion of tendons from VL and VM.Post: strengthened by the expandion of SEMIMEMBRANOUS tendon (OBLIQUE POPLITEAL LIGAMENTOPENING AT behind lateral condyle: permits passage of POPLITEUS LIGAMENT. Above: thickeng (ARCUATE LIGAMENT)12

SYNOVIAL MEMBRANE

It lines the joint capsule except posteriorly where cruciate ligaments found.In front, it is absent from patella.The free borders of infrapatellar fold are called as alar fold.Synovial joint is encapsulated by a knee joint capsule and contain a fluid called synovial fluid that lubricates the joint

The free borders of infrapatellar fold are called as alar fold

The synovial membrane lines the capsule and is attached to the margins of the articular surfaces (Figs. 10.35 and 10.61). On the front and above the joint, it forms a pouch, which extends up beneath the quadriceps femoris mus- cle for three ngerbreadths above the patella, forming the suprapatellar bursa. This is held in position by the attach- ment of a small portion of the vastus intermedius muscle, called the articularis genus muscle (Fig. 10.35). At the back of the joint, the synovial membrane is pro- longed downward on the deep surface of the tendon of the popliteus, forming the popliteal bursa. A bursa is interposed

Femoral condyles found at the end of the femur that rest at the top surface of the tibia (Tibial plateu)Articular caritilages covers the end of the bones. Function of the articular cartilage is to absorb shock and to provide smooth surface to facilitate motionExplain arthritishttps://www.youtube.com/watch?v=-hZ8OGpWBrY&list=PLfk7Z-Egnx6XQeRf2KKXDrYKtjXy375AH13

BURSALATERALPOSTERIORPOSTERIORANTERIORSubcutaneous Prepatellar SuprapatellarSubtendinous Prepatellar Subcutaneous InfrapatellarDeep InfrapatellarGastrocnemius bursaPopliteus bursaAnserine bursaSemimembranous bursaTHERE ARE 13 BURSAE IN THE KNEE JOINT. THE FOUR ARE ANTERIOR, FOUR ARE LATERAL AND FOUR ARE MEDIAL.ANTERIOR: SUBCUTANEOUS PREPATELLAR BURSA.SUBCUTANEOUS INFRAPATELLAR BURSA.DEEP INFRA PATELLAR BURSA.SUPRAPATELLAR BURSA.LATERAL:A BURSA DEEP TO LATERAL HEAD OF GASTROCNEMIUS.A BURSA B/W FIBULAR COLATERAL LIGAMENT AND THE BICEPS FEMORIS.A BURSA B/W FIBULAR COLATERAL LIGAMENT AND TENDON OF POPLITEUS.A BURSA B/W TENDON OF POPLITEUS AND LATERAL CONDYLE OF THE TIBIA.MEDIAL:A BURSA DEEP TO THE MEDIAL HEAD OF GASTROCNEMIUS.THE ANSERINE BURSA.A BURSA DEEP TO THE TIBIAL COLLATERAL LIGAMENT.A BURSA DEEP TO SEMIMEMBRANOSUS.

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BAKERS CYSTdistend bursa or herniation of synovial membrane through the posterior part of capsule of the knee

Popliteal cyst is a distend bursa or herniation of synovial membrane through the posterior part of capsule of the knee or escape of fluid through normal communication of bursa with the knee. It is filled with synovial inside the knee joint. (semimembranosus or medial gastrocnemius bursa) most common in children aged 4 to 7 years and in adults aged 35 to 70 years. more common in adults than in children. A primary Baker's cyst idiopathic Baker's cyst. It usually develops in younger people and children.A secondary Baker's cyst most common type. Develop if there is underlying problem within the knee, such as arthritis (osteoarthritis and rheumatoid arthritis), or a tear in the meniscal cartilage that lines the inside of the knee joint. or an infection within the knee joint.

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BAKERS CYSTdistend bursa or herniation of synovial membrane through the posterior part of capsule of the kneeSECONDARY BAKERS CYST:Most commonDevelops if there is underlying problem within the kneeArthritisMeniscal TearInfectionPRIMARY BAKERS CYST:IdiopathicUsually develops in younger people and children

PRIMARY SECONDARYPopliteal cyst is a distend bursa or herniation of synovial membrane through the posterior part of capsule of the knee or escape of fluid through normal communication of bursa with the knee. It is filled with synovial inside the knee joint. (semimembranosus or medial gastrocnemius bursa) most common in children aged 4 to 7 years and in adults aged 35 to 70 years. more common in adults than in children. A primary Baker's cyst idiopathic Baker's cyst. It usually develops in younger people and children.A secondary Baker's cyst most common type. Develop if there is underlying problem within the knee, such as arthritis (osteoarthritis and rheumatoid arthritis), or a tear in the meniscal cartilage that lines the inside of the knee joint. or an infection within the knee joint.

17SYMPTOMS

BAKERS CYST

Knee painTightness at the kneeSwellingTransilluminable swelling in the posteromedial aspect of the knee

(+) FOUCHER SIGNSwelling becomes TENSE ON EXTENSION and SOFT on FLEXIONMany patients are Asymptomatic.Skin changes-different diagnosis like heangioma, lyngangiosarcoma, dermatofibrosarcomaWOF: Sudden increase in size lump change in consistency, increased pain/ NV compromise- RED FLAG! URGENT SPECIALIST.- RUPTURED POPLITEAL CYST. (Musculoskeletal UTZ)18

BAKERS CYST

BAKERS CYSTMANAGEMENTASYMPTOMATICNo TreatmentSYMPTOMATICNSAIDAspirationSurgeryIf the cyst is asymptomatic, no treatment is necessary. SPONTANOUS RESOLUTION (10-20 mos) IS COMMON particularl in younger age groups.Aspiration can sometimes undertaken, occasionally with instilation of corticosteroid. Acdg to studies, it is more effective.Surgery: Indication of Bakers cyst Excision if cyst does not respond to conservative treatment 20http://www.slideshare.net/hchapman28/biomechanics-1-11191684

Synovial membrane and body mechanics

Thank You!Diane D. Sosa1st year - College of MedicineNew Era Universityhttps://quizlet.com/70065454/anatomy-joints-lower-limb-flash-cards/

Muscles-OINA.San galing ang mga vessels and nerves.Ano nag iinervate ng yan26